129252629 has 16 divisors (see below), whose sum is σ = 143237376. Its totient is φ = 115656000.

The previous prime is 129252587. The next prime is 129252631. The reversal of 129252629 is 926252921.

It is a cyclic number.

It is not a de Polignac number, because 129252629 - 2¹² = 129248533 is a prime.

It is a super-3 number, since 3×129252629³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129252592 and 129252601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129252659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352004 + ... + 352370.

It is an arithmetic number, because the mean of its divisors is an integer number (8952336).

Almost surely, 2^129252629 is an apocalyptic number.

It is an amenable number.

129252629 is a deficient number, since it is larger than the sum of its proper divisors (13984747).

129252629 is a wasteful number, since it uses less digits than its factorization.

129252629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796.

The product of its digits is 38880, while the sum is 38.

The square root of 129252629 is about 11368.9326236019. The cubic root of 129252629 is about 505.6070587433.

The spelling of 129252629 in words is "one hundred twenty-nine million, two hundred fifty-two thousand, six hundred twenty-nine".